Steam turbine construction



Dec. 1 1931. K. FREY 1,834,451

STEAM TURBINE CONSTRUCTION Filed Dec. 22), 1927 2 Sheets-Sheet l- Dec. 1, 1931. FREY 1,834,451

STEAM TURBINE CONSTRUCTION Filed Dec. 29, 1927 2 Sheets-Sheet 2 v lNveN TOR In the upper part of the casing the action of gravity will be opposed to the suction in the annular channels 7 and will thus tend to cause the return of the water in this region. This effect may be counteracted by arranging the passages 8 to have a continuous fall, as is shown'in the cross-section of a turbine illustrated in Figure 3. Here the passages in the upper half of the casing; are not arranged radially, as they are in the lower half',.but are all inclined more or less downward, thus facilitating the draining off of thewater of condensation and obviating any tendency to flow-backinto the blading. 7

Having. now described my invention what I claim as new and desire to secure by Letters Patent is 1. In a steam turbine construction, the combination with a casing, of fixed blades mounted in said casing and having their roots extending into same spacers separating the blades and likewise extending into the'casing, an annular channel traversingtheblade'roots and spacers and passages connecting said channel with the interior of said casing.

2. A construction as in claim 1 in which all the passages between the casing interior an-dthe channel have a downward slope towards the channel. 1

In testimony whereof I have signed my name to this specification;

KARL FREY. 

